Latch



Sept. 11, 192s. 1,64,217

J. B. FREYSINGER LTCH Filed sept. 21, 1925 2 sheets-'sheet 1 Sept. 11,1928.

J. B. FREYSINGER LATCH Filed Sept. 21, 1925 2 Sheets-Sheet 2 31a/vento@Patented Sept. 11, 1928.

UNITEDv STATES PATENT OFFICE.

:ronN B. EEEYSINGEE, or NEW BRITAIN,` CONNECTICUT, AssIGNoR To NORTH eJUnn MANUFACTURING COMPANY, kor NEW lI mITAIN, CONNECTICUT.

` LATCH.

Application filed September 21, 1925. Serial No. 57,716.

This invention relates to latches 'for ve hicle doors, and its object isto provide novel y means for securing the latclrbolt inl the thrownposition so that the door cannot be opened from the outside until thebolt-holding means `has been released.' The invention also seeks tosimplify the construction and thereby reduce the cost of production.'These stated objects and other objects which will 1ncidentally appear inthe Course of the following description are attained in such a device asis illustrated in the accompanying drawings, and the invention consistsin certain novel `features which will be particularly l5 pointed outfinthe appended claims.

In the drawings, Figure 1 is an inside face view of a door latchembodying'the invensition; l l 30 Figure 2 is a similar View with theparts arranged* to permitretraction ofthe bolt;y

Figure 3 is a vertical-section oit theupper portion of the verticalspindle;

Figure 4 is a horiz'ontalfsection on the line 44 of Figure 1;

Figure 5 is a horizontal section on 'the line 5-5 of Figure 1;

Figure 6 is a view similar to Figure 1 but showing a further developmentVof the invention; v

f Figures 7, 8 and 9 are detail views showing different forms of detentswhich may be employed;

Figure 10 is a horizontal section on the line 10 10 of Figure 6. Y

ln carrying out the invention, I employ the usual case plate 1, on whichis mounted the latch-bolt 2 having its nose 3 projecting through theflange 4 of the case plate. -A lon- 40 gitudinal .slot 5 isformed in thebolt near the inner end thereof and on its upper edge is a projection 6arranged to beengaged bythe roll back 7 which is turned in the usualmanner by a knob spindle and a handle (not shown) on the outer side ofthe door. Rotatably mounted on the case plate is a vertical spindle 8which projects up through the edge of the door panel, and formed on orsecuredv rigidlyto this spindle near its lower end is a cam 9 whichis'arranged to play in the slot in the bolt. Preferably, a lug 10 isformed on the bolt at the rear end of the slot-,to cooperate with thecam 9 and insure retractionof the bolt when the spindle is rotated vinthe proper direction. To rotate the spindle, a handle 11 tion, the boltbeing Secured in the thrown po-k is provided at` the upper end thereof,ysaid handle having a hub 12 threaded on the spin-` dle, and a collar12' is located below the hub 12 and receives'the upper end portion oit'a tube or sleeve 12b located on the spindle, said collar and tube. orsleeve being secured'to the spindle 8 by a cross pin .13.V Alongitudinal groove or channel 14 is formed in the upper portion of thespindle 8 and opens through the top end of the spind-le'with its lowerend at a point just below the top edge ofthe door panel. Slidablymounted in the channel 14 Vis arod 15 having at its lower end alaterally projecting stud 16which passes through a slot 16n at thelowerend of the vtube or sleeve 12b. The upper end of the rod isequipped with a button 17 litting slidably through the ripper end of athimble 18 which enters the hub 12 and is threaded onto the upperend ofthe spindle within. thehub 12'.` Pivotally mounted on the case plateadjacent the upper edge thereof and between the spindle and the flange 4is an angle lever 19 Ahaving one arm projecting past and in proximity totheverf tical spindle, the other arm vot' the lever eX- tendingobliquely downwardly and terminating in a forli 20.beneath the upperarm. The tiret-mentioned arm of the. lever is formed kwith a cam slotk21 near its free inner end which is engaged by the stud 16, and at .itsend the lever arm is constructed to be engaged b theupper free endet' aspring detent 23 which .is secured upon the case plate below the leverarm. Pivotally mounted upon the case plate i at a point between theroll-back and the op-k erating angle lever 19 is a. locking lever or dog24 having one end litted in the fork 20 with a rolling slidingengagement and its opposite end arranged to abut the roll-back andthereby prevent movement ot the same.

Normally, the parts 'are in the positions shown in Fig. 2 and the bolt 2may be retracted by manipulation of the outside knob or the spindle 8,the detent 23 holding the dog 24 and its setting lever 19 in thepositions shown.` The rod 15 at this time slides freely in the` groove13, as the spindle is turned, by reason of the engagement of the stud 16with the obliquely disposed walls of the slot 21 and-the lever 19 anddog 24 remain atrest. If the door is to be locked against outsidevopening, pressure is exerted on thebutton or cap 17 to push the rodldownward andthis action rocks the'lever 19 into the position shown inFig. 1, inasmuch as the stud 16 is at the higher end of the slot 21 andthe spindle S is at this time held against turning. The dog E24 is,consequently, swung against the rollback 7 and the knob spindle renderedinoperative. New, when the occupant ofthe car desires to permit the doorto be opened from thc outside, he merely turns the handle" bolt,.1the-pinl riding through the slot while the lever 19V is held bythe detent23.

In Figures 1 and 7the'detent rlisshown as having its free lend formedinto a trans verse tooth or ridge 22 adapted to engage.`

either one of two grooves or recesses 25 in the -side of the lever tothereby `yieldably Y hold the lever set. In Figures 6 and 8, the

free, end `of the detent 25a is fiat and hears upon la ball orroller 26fitted Within un opening inthe endof the lever Q7 `to ride on the Caseplate 10D as thele'ver rocks and engage one or another pocket 28 in thecase plate. In Figure 9, the lever29 hasa seat for Vthe ball 30 whichdoes not ride onl the case plate Y but rides between the'pockets 310,11the detent y 32, and` engages eitherwof said pockets.` In

all three forms, thedeten't operates automatically to hold theoperatingV lever against accidental movement.

My lock isV simple, inexpensive and efli. cient. It willbeunderstoodthat the lock thus described is intendedmore particularly for`closed cars in which one door is keycontrolled. and the other doors arevlocked from the inside. j It is, of course, 'desirable to provide thelock on one door in such form that it may be unlocked from the outside,and a forman`` swering this requirement is illustrated in Figf ure 6which also shows some structural refinement. In this form of theinvent-ion, tongues are struck up'l'roinA the case late 100 and rolledtoward each other to orm bearings S33-for the vertical spindle. Theflange 101 of the` case plate has a lip 102 struck therefrom to aid'insupporting'and guiding the bolt 34 and the latter is actuated yin onedirection by a cam 35 on vthe vertical spindle 8. A

volute spring 37 issecuredat its inner endv to a stud on` the case plateAand hasits opposite free` end bearing against the inner end ofthe bolt,tending constantly to project vthe same, and it is to beV understoodthat in actual factice` an equivalent spring acts upon the oltv 2; Theoperating vlever 47 is operatively connected With the spindle 36 .7 and6 respectivelyin This movement causes the stud 1Gv `in the same manneras the lever 19 ia con'- nected with the spindle 8 and controlled byapush button 370 at the top ofthe spindle, and the roll back 38 and hornorprojection 39 are essentially the sameas the elements thefirst-described lock. Instead of the bent locking lever, ,QL-however,there `isprovided a substantiallytriangular locking plate 4()v pivotedupon the case plate ata point .ncanthe spindle and, provided on its sidewithda stud l1 en gaged bythe fork 42 of thelever 47. forward edgeofthelockin plate is properly shaped to abut'` the roll ack immediatelyover the horn 39 ywhenroclred by the operat-` ing lever, and itisfurther'provided with a notch 43 receiving aglug or cam 44 of acylinder lock Vindicated, conventionally at, 45. When the barrel orcylinder Vof the oc 1. In a door' latch', the `oombination of alatch-bolt, a vertical rotatable spindle Afor moving the bolt,arOlI-back by which thebolt vmay be moved, a lockingelement having oneend arranged `to abut theroll-back whereby to prevent movement thereof,an operating angle lever provided with a'fork at one end having slidingengagementvvith the locking element, and means `carried by the spindleand engaged with the opposite end of the operating lever to set thesame. i

2. In a door latch, the combination of a latch-bolt, a vertical spindlefor moving the bolt, a roll-back by which the bolt may be Y moved, alocking element arranged to abut the roll-back and prevent movementthereof, an` operating lever engaged at one end with the locking elementand having a cam yslot near its oppositeend', and ast-ud .slidablymounted` on the spindle and engaged in the cam slot whereb to set thelever.

3. In a` door atch, the combination of Va latch-bolt, a vertical spindlefor movingthe the bolt, a roll-baekby which .the bolt may he moved, alocking element` arranged to abut the roll-back and prevent movement ofthe same, an operating leverengaged at one end with the locking elementlandprovided near its opposite end withfa camislot, a detent ielda lyengaging said end ofthe operating ever, and a stud slidably mountedonthe spindle and engaged insaid cam slot where'- bygto set thelever.f l1 ,4. In a; door latch, the combination of a latch-bolt, averticalspindle for'moving the bolt, said spindle havinga lon `tadna1hauf nel inits upper portion, a rol -back by which The Y d k 45 is rolled, the lug44 engaged -with the notchl 43 will rock the locking plate 40 sothatmove` ment` of the bolt 34 willfbe permittedor prefl the bolt may bemoved, means for looking the roll-back including a lever having a camslot in one end, a. rod slidably mounted in the channel in the spindleand provided at its lower end with a stud playing in said cam slot, andmeans at the upper end of the rod to depress the same and set the lever.

5. In a door latch, the combination ot a latch-bolt, a verticalrotatable spindle for moving the bolt, a roll-back by which the bolt maybe moved, a locking element arranged to abut the roll-back and preventmovement thereof, an operating lever operatively engaged With thelocking element, means carried by the spindle for setting the operatinglever, and means` independent of theY operating lever for setting thelocking element. y

6. In a door latch, the combination of ak latch-bolt, a verticalrotatable VVspindle for moving the bolt, a rollback by which the boltmay be moved, a locking elementarp JOHNv B. FREYSINGER;

